DEVICE TO PRODUCE WELLS IN SOIL BY IMPACT METHOD Russian patent published in 2014 - IPC E02F3/18 E21B1/12 

FIELD: construction.

SUBSTANCE: device comprises interacting an impact mechanism, a working tool, built-up rods, connected to the working tool. The impact mechanism is made in the form of a diesel hammer installed vertically in guides of a pile driver and interacting with a transfer mechanism, made in the form of a block of two communicating mutually perpendicular hydraulic cylinders, arranged in the vertical plane, at the same time one of them is made with external and internal coaxial cavities, equipped with pistons with vertical coaxial stems, besides, the external stem is made as hollow and detachable, and the other cylinder is installed in direction of well tunnelling, and its space beyond the piston communicates by a pipeline with the external cavity of the vertical cylinder. The block of cylinders is placed on a horizontal support plate installed in a sump tank at the tunnelling depth, and with its rear part it rests against the vertical support plate interacting with the vertical wall of the sump tank. Both plates are equipped with shock absorbers installed on helical piles screwed into the floor soil and the vertical wall of the sump tank and equipped with devices for gap closing.

EFFECT: increased possibility to tunnel horizontal wells in heavy soils due to increased energy of working tool impact.

5 cl, 2 dwg